nikon_jon Loc: Northeast Arkansas

Here's a test, just for fun. And, yes, I do know the answer.

What does JPEG stand for and when and why was it created?

Take a stab at it and after a bit, I will tell what I know about JPEG.

RockinRobinG Loc: The Middle of Nowhere, Nebraska

The name stands for [b]Joint Photographic Experts Group.]/b] JPEG itself specifies only how an image is transformed into a stream of bytes, but not how those bytes are encapsulated in any particular storage medium. A further standard, created by the Independent JPEG Group, called JFIF (JPEG File Interchange Format) specifies how to produce a file suitable for computer storage and transmission (such as over the Internet) from a JPEG stream. In common usage, when one speaks of a "JPEG file" one generally means a JFIF file, or sometimes an Exif JPEG file. There are, however, other JPEG-based file formats, such as JNG. (Etc., etc., etc.,)

[Note: Google]

nikon_jon Loc: Northeast Arkansas

Wow! Now I am impressed. And so early in the morning!

How bout the when and why?

Zerbphlatz Loc: Southern New Hampshire

LOL - that pretty much says it all.....

Zerbphlatz Loc: Southern New Hampshire

The spec I found (google also) says the group was formed in 86, the spec was released in 92. It was a method to transmit image information via continuous tone transmission methods - aka fax machines, or modems in general.

RockinRobinG Loc: The Middle of Nowhere, Nebraska

The name "JPEG" stands for Joint Photographic Experts Group, the name of the committee that created the JPEG standard and also other standards. It is one of two sub-groups of ISO/IEC Joint Technical Committee 1, Subcommittee 29, Working Group 1 (ISO/IEC JTC 1/SC 29/WG 1) – titled as Coding of still pictures.[3][4][5] The group was organized in 1986,[6] issuing the first JPEG standard in 1992, which was approved in September 1992 as ITU-T Recommendation T.81[7] and in 1994 as ISO/IEC 10918-1.

The JPEG standard specifies the codec, which defines how an image is compressed into a stream of bytes and decompressed back into an image, but not the file format used to contain that stream.[8] The Exif and JFIF standards define the commonly used file formats for interchange of JPEG-compressed images.

(I love Google and Wikipedia) Anything else you might want to know? <giggles>

Santayo Loc: Kelso, TN

You cheated Robin

Old Timer Loc: Greenfield, In.

You are Rockin, Robin.

nikon_jon Loc: Northeast Arkansas

Very informative data on JPEG there. Without all the technical jargon, which is ok of course, I will relate how I became acquainted with the purpose and history of JPEG.

As has been mentioned it was a group formed in 1986 and on a practical level here why a change was needed.

In 1989 I went to work as a photographer for our local newspaper. It was a small enough operation that the photogs also had to work with pre-publish prep. That is, knowing how to use a flat bed camera and make screen prints for reproduction.

Wire photos from AP (Associated Press) came over a fax machine in the office that was dedicated to only receiving wire pix. They took a lot of time and the machine used thermal paper. About the only kind of fax available at that time. Color came as separations. That is, pix separated into the three basic colors, cyan, magenta, yellow and one for black. This could take up to two hours or more depending on location of the origin of the print and quality of connections. If the transmission failed, you had to start over.

When you were at 'crunch time' and the editor didn't have that pic he wanted of the terrorist who died in Lower Slobovia when he choked on a banana and fell over having spasms in his upper glottalucas and couldn't respirate so he died, then we all suffered because editors often had no patience when they didn't get their way.

This was a problem everywhere that newspapers had to deal with, so AP along with others supported the JPEG (Joint Photographic Experts Group) group and contributed to their efforts so as to provide a system to compress photo data digitally so it could be transmitted over the wire services in a faster more efficient way. When we were getting pix in a matter of minutes instead of hours and the quality was way, a whole lot, much better, it was like champaign and caviar.

Zerbphlatz Loc: Southern New Hampshire

Ahhh - the more interesting side of history that gets filtered out by google (and other search engines). Actually, the filter is probably more the end user than the search engine....

Anyway, Thanks for the inside story!

-=Z=-

Zerbphlatz Loc: Southern New Hampshire

Santayo - is that a flying baby, sitting baby about to topple over or photoshopped? Hard to tell with the small picture.

-=Z=-

ggttc Loc: TN

Forgive me for saying....you guys have way too much time on your hands...but it is interesting...thanks

ggttc Loc: TN

your bringing back old memories Nikon...I used to work at a daily...not small by any means...but we used to put out a 64 page paper on 3 macs with 30 MB hardrives...not gigs..but megs...and I was a photographer...and can still smell the darkroom...and then things changed in less than a year...the place was full of computers...and digital.

Santayo Loc: Kelso, TN

He is Flying.........pic is straight outa camera

jerryc41 Loc: Catskill Mts of NY

And the landing?